Siphon-furnace



2 Sheets-Sheet 1.

(No Model.)

H; $IEBEN & M. WAGNER.

SIPHON FURNACE.

No. 532,105. Patented Jain. 8,1895.

mmwk (No Model.) 2 Sheets-Sheet 2.

H. SIEBEN & M. WAGNER. SIPHON FURNACE.

No. 532,105. Patented Jan. 8, 18%.

\\\\i\\ \x Q .NlTED STATES HENRY SIEBEN AND MATTHEVV- S'I'P'HONSTPEGIFIGATION forming part of Letters Patent No. 532,105, dated January8, 1895.

Application filed September 1, 1894. Serial No. 521,895. (No model.)

To ctZZ whom it may concern:

Be it known that we, HENRY SIEBEN and MATTHEW WAGNER, citizens of theUnited States, residing at Chicago, in the county of Cook and State ofIllinois, have invented a new and useful Siphon-Furnace, of which thefollowing is a specification.

This invention relates to steam boiler and other furnaces, and itsobject is to provide a furnace of improved construction and mode ofoperation wherein a thorough combustion and destruction of unconsumedparticles, of smoke, &c., are effectively accomplished.

The invention consists substantially in the construction, combination,location and relative arrangement of parts, all as will be more fullyhereinafter set forth, as shown in the accompanying drawings and finallypointed out in the appended claims.

Reference is had to the accompanying drawings and to the various viewsand reference signs appearing thereon, and wherein- Figure 1 is a viewin vertical longitudinal section of a construction embodying ourinvention. Fig. 2 is a vertical transverse sectional view, taken on theline 2, 2, Fig. 1. Fig. 3 isa horizontal sectional-plan view, taken onthe line 3, 3, Fig. 1. Fig. 4 isa vertical transverse sectional view,taken on the line 4, 4t, 1

Fig. 1. Fig. 5 is a detached detail view of the steam injecting nozzles.V

The same reference sign is used to designate the same part wherever itmay occur throughout the several views.

In the drawings reference numeral 6 dcsignates a steam or other boiler,mounted in suitable settings 7, which form a furnace chamber 8. Thebridge wall 9, forms, with the front wall of the other boiler setting,the

a passage way 14, extending the whole length thereof and communicatingat the lower end thereof with the ash pit through a series of openings15, as shown, and at the upper-end thereof with the fire space through aseries of openings 16. large area at the lower end thereof, whichPassage way 14: is. made of gradually diminishes toward the upper end'as most clearlyshown in Fig. 1. A special construction of the bridgeWall at the endof passage way 14 delivering into the fire space isprovided, wherein a block 17 is arranged-upon the upper surface of aportion of the bridge transversely across the furnace chamber. Saidblock is constructed trapezoidalin cross section, the two non-parallelsides being inclined toward each other from the base, forming aprismatic shaped block. One side of block 17 forms a wall of the reducedpassage Way 14. The other wall is formed by the brick of the bridge walland is inclined to correspond to the side of block 17. Openings 16 areformed by suitably spaced blocks 18, resting partly-on block 17 andpartly on 19 extending entirely across the furnace chamber and restingupon blocks 18. The space between contiguous blocks 18 is filled withany suitable composition of cement as shown at 20, up to the point wherepassage way opens into the fire space. The ends of block 18 presentedtoward the fire space are preferably beveled in opposite directions, asshown, see Fig. 1, and the block 17 and plate 19 are preferably curvedlengthwise as shown, for a purpose presently to be described.

In the rear portion of the furnace chamber 8, we arrange in any suitablemanner funnelshaped hoods, 20, 21. We have shown a pair of suchhoodsar-ranged with the mouths of the funnelspresented toward the frontend of the furnace chamber. The body portion, 22, 23, of each hood iscurved back' upon itself and extends forwardly in the furnace-chamberand delivers into an opening 24, formed through the base of the bridgewall and adjacent to and communicating with the base of passageway 14:,as shown. Preferably the hoods 20, 21 are arranged in each side of thefurnace chamber and the body portions 22, 23 thereof are ofcomparatively large capacity and of uniform size from the base of theirfunnel shaped mouths to the point of their connection with the bridgewall. WVe-have provided a steam pipe 25, andarrange the same with oneend projected into the horizontally arranged forward portion or leg 22,23, of each hood, and centrally thereof, as shown. Steam pipe 25communicates through the brick work of the bridge wall,anda plate ico 'tions arranged in a horizontal line.

suitably arranged pipes 26,27 with the boiler j 6. Suitable valvedevices, 28, are provided to regulate the jet of steam to be projectedthrough pipes 25, 26, 27, into pipes 22, 23. The ends of pipe 25projecting into the enlarged pipes 22, 23 are preferably drawn to apoint as shown.

In the brick work of the boiler setting and above the doors opening intothe fire space we arrange horizontally a short section of pipe 29,adapted to receive a supply of steam through suitably arranged pipes 30,31, communicating with the boiler. Conveniently arranged valves 32, areprovided to regulate the flow of steam thereto. Elbow projections 33, 34are provided at each end of pipe section 29, and arranged to projectinto fire space 11, as shown, and to the inwardly projecting end of eachis secured a nozzle, 35, 36, tilted downwardly, as shown. Each nozzle,35, 36, is provided with a series of perfora- This line of perforationsis arranged so as to deliver a spray of steam in the form of a sheetfrom the sides toward the center of the fire space, and to this end theperforations in the right hand nozzle are inclined toward the left, andthose in the left hand nozzle are inclined toward the right, asindicated diagrammatically in Fig. 5. A short vertical pipe 37, isconnected through a T or other suitable connection with pipe 29, midwaythe length thereof. Pipe 37 is arranged in the brick work of the boilersetting between the doors opening into the fire space, and to the lowerend thereof is attached an elbow pipe 38, projecting into the fire spaceand to which is attached a nozzle 39, similar to nozzles 35, 36, andinclined or tilted downwardly in a similar manner. Nozzle 39 is providedwith a series of openings arranged in line and inclined in oppositedirections to deliver in the form of a sheet a spray of steam, asindicated in the Diagram 5. a

The operation .of the invention is as followsz-The smoke, unconsurnedcarbon and other gaseous and solid products of combustion arising fromthe bed of the burning fuel upon the grate bars are held in the fire bymeans of the blanket of steam from the nozzles 35, 36, 39. The nozzle 39being arranged centrally of the fire chamber, and consequently nearestthe hottest part of the fire is lower than the side nozzles 35, 36, andhence the blanket of steam injected therefrom into the fire chamberserves to hold the unconsumed particles to the action of the hottestpart of the fire. Whatever particles of unconsumed matter escapes orarises from the sides of the bed of fuel are held by the blankets ofsteam from nozzles 35 and 36. By reason of thetilt or inclination giventhe nozzles, the sheets or sprays of steam are directed in such a manneras to assist in maintaining effectively the unconsu med products ofcombustion in the fire chamber and thus subject-ing them to thecontinued action of the heat. A draft of fresh air is delivered to thefire space above the steam blankets, and hence oxygen is supplied to theflames and heat arising from the fuel through passage way 14:. By reasonof the diminishing capacity of this passageway and the specialconstruction of the bridge wall at the mouth thereof, as above describedthe draft of fresh air and hence of oxygen is delivered at the properrate of fiow and in the most effective direction. The beveling of theends of the blocks 18 serves to assist in the proper delivery of thefresh air. Should any particles of matter escape without being entirelyconsumed they pass rearwardly through the furnace chamber arid into theflared or enlarged mouths of the funnels 20, 21 and thence into thepipes 22, 23 and returned to the opening 24 in the base of the bridgewall and thence they are drawn through passageway 14 and again deliveredinto the fire space mixed with fresh air and oxygen, and hence againsubjected to the action of the fire, or, else, if the draft throughpassageway 14 is not sufficiently strong for the purpose they aredelivered into the ash pit, and evenly distributed therein, and thencethey are carried by the natural draft through the bed of burning fueland into the fire space, in either case being again subjected to theaction of the fire. The steam jet 25 assists in creating a draft throughpipes 22, 23, causing a suction which draws the unconsu med particlesinto the funnel mouths 20,21. In order to provide against the escape ofthe solid particles of unburned carbon and other products of combustionthrough the angular spaces between the side walls of the boiler settingand the curved boiler, we arrange plates 4O, 41 in said triangularspaces, adjacent to the rear end of the boiler, as shown.

\Ve have found in practice that a furnace constructed in accordance withour invention, while exceedingly simple in structure and easilyunderstood and operated, is thoroughly efficient in operation andeffects in a most satisfactory manner a complete combustion of the solidparticles of unburned carbon and other combustible constituents ofsmoke.

While we have shown and described aspecific form of mechanism forcarrying out the. principles of our invention, it is to be distinctlyunderstood that many changes and modifications would readily suggestthemselves to those skilled in the art to which this invention relates.We do not desire, therefore, to be limited to the exact details shownand described; but,

Having now described the principles of our invention and a form ofmechanism embodying the same and explained the mode of operationthereof, what weclaim as our own invention, and desire to secure byLetters Patent of the United States, is-

1. In a furnace, a bridge wall provided with a passage-way therein,delivering into the fire chamber at one end and the ash pit at the otherend, means for spraying steam into the fire chamber, hoods arranged atthe rear end ofthe furnace, and having enlarged mouths presented towardthefront of the furnace and connections between said hoods and saidbridge wall arranged to open 'into the passageway therein at a pointadjacent to the ash pit opening and plates arranged adjacent to saidhoods, whereby the current of unburned particles is directed into saidhoods and returned to the fire chamber; as and for the purpose setforth.

2. In a furnace a bridge wall having a passage way therein, a blockhaving inclined sides, one of which forms one wall of said passage wayat the endthereof, a series of blocks suitably spaced and resting at oneend upon said first mentioned block, and a plate adapted to rest on saidblocks, thereby forming a sewith the ash pit, a series of spaced blocksarranged to partially close the opposite end thereof, said blockspresenting beveled ends, and the space between contiguous blocks adaptedto be filled with cementat a point adjacent to the mouth of said passageway,-

and means for creating a draft in said communications; as and for thepurpose setforth.

6. In a furnace a steam pipe arranged in the setting above the firedoors, nozzles pr0- jecting from each end thereof into the fire space ateach side thereof, a pipe connecting with said steam pipe midway thelength thereof and projecting downwardly therefrom between the doors, anozzle projecting from said downwardly extending pipe and into the firespace from the front thereof, and means for delivering steam to saidsteam pipe whereby jets of steam are delivered into the fire from thefront thereof on different horizontal planes, the central jet beingarranged nearest the bed of fuel; as and for the purpose set forth.

In witness whereof we have hereunto set our hands, this 29th day ofAugust, 1894, in the presence of two subscribing witnesses.

HENRY SIEBEN. MATTHEW \VAGNER.

Witnesses S. E. DARBY. KATE V. DARBY.

